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You can repair the encoder: open up the? four retaining lugs on the encoder? which will allow you inside, you can then clean and re-tension the small pick up fingers and reassemble and refit to

In message <[email protected]>, Steve Bunting M0BPQ <steve@...> writes I assume it works on Rx. Someone posted a decent set of schematics recently. On page 6/7 you can see

Thanks Brian -top tip! Hope to see you again on 70MHz soon Steve, M0BPQ

Hi Brian, I don't work 70MHz (yet!) but my ft847 stopped working on 7MHz. No TX or RX. A bit of digging later and I traced it to D3053 in the bpf. Replaced the pair in bpf 4 and it’s working a treat

In message <[email protected]>, Andy M0DEL <amlindley@...> writes Thanks I'll have look at the 21MHz equivalent BPF7. I'm surprised a fault there stopped the TX from

Hi all, Anyone know if the board is still available for the mod adding the roofing filter to this radio? I’ve checked on the InRad site and the filter’s still there but not the board... The

My 847 has a 2100 or 2300 Hz Inrad filter and want to find a stocker or even wider the narrow filter is not the best when bangin away on 6M FT8 and the like I know Inrad sold a 2800Hz filter, but even

There are two SSB filters...? One TX and one RX (owner's manual page 95).? Are both of yours narrow?? If not, you could try swapping them.? Using SPLIT or FAKE SPLIT in FT8 should keep your TX

thats a good idea Mike almost cheating but it wont work currently as the CAT circuit is poofed on my rig no life on the lines at all I have the MAX232 chip and the muxer chip on hand, for when the day

Hello. I have a faulty FT 847 serial number 6G070383. The problem is Q1105? CPU of the AF-CNTL board doesn't get is 5 supply. According to the the service manual, this voltage comes for 5 volts

Q1134 can be found on the backside of the board near connector J1028.

TNX??!!!! 73 ??????? ??? ??, 13 ????? 2020 ?-17:49 ??? ?Nils Ostman?? <? n.e.ostman@...??>:?

Thanks Jerry-kn6cg

Well somehow I managed to loose/misplace one of the 2 smaller rubber button inserts when I had the display unit disassembled for other repairs.? This was the Tuner Button Rubber insert in the face

Hello All Has anyone had either of these 2 symptoms on their 847? When powering up or occasionally during operation to chatter or flicker causing you to restart controller software. I have had it,

In message <[email protected]>, Douglas Richards <ve3ffr@...> writes Closest I've had was the in-line fuse overheating, corroding and making poor contact. Mine were the

Check your power supply connections. Loose connection are OK during receive, but during transmit, you will be a voltage drop resulting in all kinds of bad things happening including relay chatter.

Hi. Try to run the radio full power only with a dummy load, and measure the voltage supply in Tx and Rx Modes. Make sure the voltages are within specs. The 847 has an over voltage protection. If you

Ever wonder what the inside of a Collins mechanical filter looks like?

You must be one of those kids that always has to take things apart to see how they work HI HI 73, Mike